80.159.2.128/25

Public

Class A — /25 prefix — 126 usable hosts

Network Address
80.159.2.128
Broadcast Address
80.159.2.255
Subnet Mask
255.255.255.128
Usable Hosts
126
First Usable IP
80.159.2.129
Last Usable IP
80.159.2.254
Total IPs
128
Prefix Length
/25

Network address — the base address of the block (80.159.2.128). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 80.159.2.255 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 126 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask255.255.255.128 is the dotted-decimal equivalent of /25. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 80.159.2.128/25
Network Address 80.159.2.128
Broadcast Address 80.159.2.255
Subnet Mask 255.255.255.128
Wildcard Mask 0.0.0.127
Prefix Length /25
IP Address Class Class A
Total IP Addresses 128
Usable Host Addresses 126
First Usable IP 80.159.2.129
Last Usable IP 80.159.2.254
Network (Hex) 0x509F0280
Broadcast (Hex) 0x509F02FF
Address Type Public / Globally Routable

Binary Representation

Network Address
01010000.10011111.00000010 01010000.10011111.00000010.10000000
Subnet Mask
11111111.11111111.11111111.10000000

The first 25 bits (1s in the mask) identify the network. The remaining 7 bits identify hosts within the network.

Split into Equal Subnets

Split 80.159.2.128/25 into 2 equal /26 subnets (62 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 80.159.2.128/26 80.159.2.128 80.159.2.129 80.159.2.190 80.159.2.191 62
2 80.159.2.192/26 80.159.2.192 80.159.2.193 80.159.2.254 80.159.2.255 62

IP Address Sample

Showing first 16 of 128 total IPs.

80.159.2.128 net
80.159.2.129
80.159.2.130
80.159.2.131
80.159.2.132
80.159.2.133
80.159.2.134
80.159.2.135
80.159.2.136
80.159.2.137
80.159.2.138
80.159.2.139
80.159.2.140
80.159.2.141
80.159.2.142
80.159.2.143
… 112 more IPs …

/25 Subnet Reference

Total IPs 128
Usable Hosts 126
Subnet Mask 255.255.255.128
Wildcard 0.0.0.127

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